On the eve of Arizona’s primary, Hillary Clinton railed against the state’s Republican leadership for rejecting federal matching funds for children’s health, for spending too little on schools and for hard-line policies on illegal immigration.

“We are a nation of immigrants and exiles,” she said at a raucous rally in a high school gymnasium. “When I see people like Sheriff [Joe] Arpaio and others who are treating fellow human beings with such disrespect, such contempt, it just makes my heart sink. We are better than that.”

The crowd of about 2,000 booed at the mention of Arpaio, the Maricopa County sheriff who is nationally known for his strident stances on immigration. Arizona is the modern-day epicenter of the nation’s immigration wars, and the presidential candidates in both parties have seized on the issue here ahead of Tuesday’s primary.

Mar. 21, 2016, 5:02 p.m.

Donald Trump's much-anticipated address to a leading pro-Israel lobbying group Monday evening was light on his trademark improvisation and full of standard rhetoric favoring the U.S. ally.

In a departure from his shambolic, off-the-cuff approach at his campaign rallies, Trump mostly stuck to prepared remarks read from a teleprompter, declaring at the outset that he's "a newcomer to politics but not to backing the Jewish state."

Playing to his image as the anti-politician, Trump asserted that he “didn't come here tonight to pander about Israel. That's what politicians do — all talk, no action," he told the assembled members of the American Israel Public Affairs Committee.

Mar. 21, 2016, 4:56 p.m.

George Clooney made his political proclivities known in an open letter that pointedly bashed Republican front-runner Donald Trump.

The Hillary Clinton campaign emailed Clooney's letter to supporters on Monday, in which he called for voters to rally behind the Democratic presidential hopeful and her "voice of tolerance and experience." The actor-activist and his wife, Amal, a human-rights lawyer, are hosting a fundraiser for Clinton at their Los Angeles home next month.

The Oscar-winning producer didn't actually use Trump's name in the letter but referenced the billionaire's inflammatory campaign rhetoric and slogan.

Mar. 21, 2016, 4:19 p.m.

The 2016 presidential campaign, like most, has spawned many myths – half-truths, delusions and some outright falsehoods – that spread through the Internet and over the airwaves. We debunked four that have taken on outsized prominence.